Another equation that has been used to model population growth is the Gompertz equation
dy/dt=ryln(K/y), Where r and K are positive constants.
Sketch the graph of f(y) versus y, find the critical points, and determine whether each is asymptotically stable or unstable.
For 0 ≤y≤K, determine where the graph of y versus t is concave up and where it is concave down
For each y in 0< y≤K, show that dy/dt, as given by the Gompertz equation, is never less than dy/dt, as given by the logistic equation.

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